Abstract
Peanut aflatoxin contamination caused by Aspergillus flavus is a serious constraint for food safety and human health in Senegal. The present study aimed to identify sources of resistance for A. flavus colonization and aflatoxin contamination. Thus, seeds from 67 peanut genotypes were tested under laboratory conditions. Aqueous conidial suspension of an aflatoxinogenic strain of A. flavus was used for inoculation in Petri dishes containing ten seeds of each genotype, and data on incidence and severity were recorded. Total aflatoxin concentration in seeds was determined on 15th day after inoculation using mReader® method. Results showed a significant (p<0.001) variation of aflatoxin, incidence and severity among the tested peanut genotypes. Incidence ranged from 0 to 70% with a mean of 20.36 ± 0.8%. Out of the 67 genotypes, eight showed incidence less than 10%. Severity ranged from 0 to 44% with a mean value of 8.82 ± 0.45%. The genotype 12CS_104 showed aflatoxin concentration level in conformity with the European standard (4 ppb). Out of three clusters revealed by hierarchical classification based on disease incidence and severity, the cluster 1 contained 33 genotypes characterised by low incidence and severity values. These genotypes can be tested under field conditions to confirm their resistance to A flavus.
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Claims 7
Claim · model-written summary
Aflatoxin, incidence and severity varied significantly among peanut genotypes.
- Taxon
- peanut genotypes
Arachis hypogaeae0 - Interactor
- Aspergillus flavus
Aspergillus flavust0pathogen - Outcome
- aflatoxin, incidence and severitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant (p<0.001) variation of aflatoxin, incidence and severity among the tested peanut genotypes”
t0“Aspergillus flavus”
Claim · model-written summary
Infection incidence ranged from 0 to 70%, averaging 20.36 ± 0.8%.
- Taxon
- PeanutArachis hypogaeat0
- Interactor
- Aspergillus flavusAspergillus flavust0pathogen
- Outcome
- Incidencee0
- Direction
- rangede0
- Value
- 0 to 70%e0
- Qualifier
- 20.36 ± 0.8%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Incidence ranged from 0 to 70% with a mean of 20.36 ± 0.8%”
t0“Peanut Aspergillus flavus”
Claim · model-written summary
Eight of 67 genotypes had incidence below 10%.
- Taxon
- PeanutArachis hypogaeat0
- Interactor
- Aspergillus flavusAspergillus flavust0pathogen
- Outcome
- incidencee0
- Direction
- less thane0
- Value
- 10%e0
- Qualifier
- eighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Out of the 67 genotypes, eight showed incidence less than 10%”
t0“Peanut Aspergillus flavus”
Claim · model-written summary
Severity ranged from 0 to 44%, averaging 8.82 ± 0.45%.
- Taxon
- PeanutArachis hypogaeat0
- Interactor
- Aspergillus flavusAspergillus flavust0pathogen
- Outcome
- Severitye0
- Direction
- rangede0
- Value
- 0 to 44%e0
- Qualifier
- 8.82 ± 0.45%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Severity ranged from 0 to 44% with a mean value of 8.82 ± 0.45%”
t0“Peanut Aspergillus flavus”
Claim · model-written summary
Genotype 12CS_104 met the European aflatoxin standard of 4 ppb.
- Taxon
- PeanutArachis hypogaeat0
- Material
- 12CS_104e0
- Interactor
- Aspergillus flavusAspergillus flavust0pathogen
- Outcome
- aflatoxin concentration levele0
- Value
- 4 ppbe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“genotype 12CS_104 showed aflatoxin concentration level in conformity with the European standard (4 ppb)”
t0“Peanut Aspergillus flavus”
Claim · model-written summary
Cluster 1 contained 33 genotypes with low incidence and severity.
- Taxon
- PeanutArachis hypogaeat0
- Material
- cluster 1e0
- Interactor
- Aspergillus flavusAspergillus flavust0pathogen
- Outcome
- incidence and severity valuese0
- Direction
- lowe0
- Value
- 33 genotypese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cluster 1 contained 33 genotypes characterised by low incidence and severity values”
t0“Peanut Aspergillus flavus”
Claim · model-written summary
The authors recommend field testing these genotypes to confirm resistance.
- Taxon
- PeanutArachis hypogaeat0
- Interactor
- A flavusAspergillus flavuse0pathogen
- Outcome
- tested under field conditions to confirm their resistance to A flavuse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These genotypes can be tested under field conditions to confirm their resistance to A flavus”
t0“Peanut Aspergillus flavus”